S-91081A032 0.5" ID x 1.25" OD ASME B18.21.1 USS Washers
USS Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior load distribution with 1.25" OD design to prevent surface damage and extend equipment life
- Precision fit for 7/16" screws with 0.5" ID ensuring secure fastening and reduced vibration
- Industrial-grade steel construction providing excellent durability and corrosion resistance
- ASME B18.21.1 compliance guaranteeing consistent quality and dimensional accuracy
- RoHS 3 & REACH compliant meeting strict environmental regulations for safe industrial use
- Versatile thickness range (0.064-0.104") accommodating various assembly requirements
- Reliable performance in demanding applications due to robust USS flat washer design
Professional Applications & Engineering Value
These USS flat washers provide critical engineering solutions for industrial applications where load distribution and surface protection are paramount. The steel construction combined with precise dimensional specifications (0.5" ID, 1.25" OD) ensures reliable performance in heavy-duty assemblies using 7/16" fasteners. By meeting ASME B18.21.1 standards, these washers deliver consistent quality that prevents fastener loosening, reduces stress concentrations, and protects mating surfaces from damage. The controlled thickness variation allows for optimal compression and spacing in various mechanical applications, making them ideal for construction equipment, industrial machinery, and structural assemblies where vibration resistance and long-term reliability are essential.
Specification Summary & Compliance
This USS flat washer features precise dimensional specifications with 0.5" inner diameter, 1.25" outer diameter, and thickness range of 0.064-0.104" designed specifically for 7/16" screw applications. Manufactured in compliance with ASME B18.21.1 standards for dimensional accuracy and performance requirements. The product is RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant with current SVHC requirements as of June 14, 2023, ensuring environmental responsibility and regulatory adherence for industrial use.
